Aus 153-6published at 17.4 overs
SIX MORE!
This game is swinging one way and then another.
Australia need 34 off 14 balls.
England hold nerve to win by three runs - Australia now lead points-based series 6-2
Australia slip to 75-4 & 160-7 after being 59-0
Perry's late onslaught - 51 off 27 balls - not enough for Australia
Ecclestone reaches 100 T20 wickets - the quickest to the mark
England set Australia 187 to win, despite losing five wickets for 19 runs in 23 balls
Sutherland takes two wickets in two balls and superb catch
Wyatt top-scores with 76 off 46 balls
Next match: Third T20 at Lord's, Saturday (18:35 BST)
Highlights on BBC iPlayer and BBC Sport app from 23:00 BST
Callum Matthews and Mike Peter
SIX MORE!
This game is swinging one way and then another.
Australia need 34 off 14 balls.
Need 40 off 15 balls
Uh oh.
This is huge.
Georgia Wareham slaps Charlie Dean over mid-wicket for a gigantic six.
Silence descends over The Oval.
Need 46 from 16 balls
Oh, shot.
Georgia Wareham turns down a single off the first ball of Charlie Dean's over, but then slaps the off-spinner over mid-off.
Superb strike.
Henry Moeran
BBC Test Match Special commentator
I've just been into the crowd, I thought I had to sample this. It's brilliant down there, absolutely jam packed at this end of the ground. There's a real sense of passion and enthusiasm.
When Ellyse Perry was given not out I thought I was back at Lord's on Saturday afternoon.
Need 50 from 18 balls
Good comeback from Sophie Ecclestone with just two runs from the final three balls.
Australia get 10 off the over, but when they needed 15 an over, that is a success for England.
Alex Hartley
Former England bowler on BBC Test Match Special
They need boundaries, Australia. England are still in the driving seat, still in control. However if this over goes wrong for England they'll panic as this is Sophie Ecclestone bowling.
Need 52 off 21 balls
Four more!
Ellyse Perry backs away, giving herself some room, and cuts to the point fence.
This is getting tense again.
Need 56 from 22 balls
Four!
Ellyse Perry squeezes past short third and away to the boundary.
Sophie Ecclestone's hands go on her head. She can't believe Perry has got that away.
Need 60 from 23 balls
Dot ball.
Remember, England have to win to stay in the Ashes.
An Australia win would see them retain the Ashes.
Need 60 from 24 balls
Lovely stuff from Sarah Glenn, just two from the final three balls.
Australia need 15 runs an over. 60 off 24 balls.
If they win from here, you'll just have to say fair play to be honest.
Alex Hartley
Former England bowler on BBC Test Match Special
That was a good catch from Heather Knight, up above her head. That ball was travelling.
Sutherland c Knight b Glenn 20 (Aus 125-6)
Oh catch, Heather.
Annabel Sutherland looks to go in to out over the covers off Sarah Glenn, but Heather Knight flies through the air and takes a superb two-handed catch at mid-off.
What a way to mark your 100th T20 international.
Phil Long
BBC Test Match Special statistician
England scored 67 off the last five overs, Australia need 67 off the last five overs.
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Surely if she's walking off she thinks she's hit it?
Joe, Sheffield
Need 67 off 30 balls
Annabel Sutherland is very good. What a talent the 21-year-old is.
She plays a gorgeous bottom-hand drive down the ground for four, before picking another boundary, just out the reach of Sophie Ecclestone at long-on.
England were 119-6 at this stage... it's not over.
Alex Hartley
Former England bowler on BBC Test Match Special
It feels like England have all the options tonight. That's what it feels like when you're on top of the game, you feel like you can turn to any bowler at any stage.
Need 78 off 36 balls
Ellyse Perry then takes a single from the final ball of the over.
The required run-rate goes up to 13 an over. That's going to be very tough.
Alex Hartley
Former England bowler on BBC Test Match Special
When there's a spike there a gap between bat and ball, the spike is delayed.
Hmmmm.
Ellyse Perry is called back by Russell Warren and survives.
That's an interesting one seeming she'd started to walk off, almost admitting her guilt.
It looked like the spike on UltraEdge came after the ball passed the bat.
This is tough.
It's hard to tell if the UltraEdge matches the ball passing the bat.
Ellyse Perry is walking off, but has she gone prematurely?